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ROLLING MILL. 7 Patented Nov. 13, 18831 WITNESSES as/c a T. SHAFPER.

ROLLING MILL. No. 288,501. Patented Nov. 13, 1883.,

TNESSEfi N, PE'IERS. Phnlu Lnh Niven Sterne PATENT @rrrcia.

THOMAS SHAFFER, OF PHCENIXVILLE, PENNSYLVANIA, ASSIGNOR TO THE PH(ENIX IRON COMPANY, OF SAME PLACE.

ROLLING-MILL SPECIFICATION forming part of Letters Patent No. 288,501, datedNovember 13, 1883.

Application filed June 2-2, 1383. (No model.)

To all "1072 0111, it may concern:

Be it known that I, THOMAS Snarrnma citizen of the United States, and a resident of Phoenixville, Chester county, Pennsylvania, have invented certain Improvements in Rolling-Mills, of which the following is a specification.-

My improvements, although applicable to rolling-mills generally, are especially directed to the last pair but one of a train of rolls for making round bar-iron; my improvements consisting in mechanism, fully described hereinafter, for removing from a partly-finished bar detachable scraper, I 2'.

as it leaves the rolls the webs or fins before it is subjected to the final passes which complete after being subjected to the action of the pair the bar.

My improvements further consist in devices described hereinafter, for preventing all vertical play of the rolls and thereby insuring that steadiness which is desirable in the rolling of round bars.

In the accompanying drawings, Figure 1, Sheet 1, is a view of one end of a rolling-mill with my improvements; Fig. 2, a front view, partly in section; Fig. 3, a plan view of part of Fig. 1; Fig. 4, Sheet 2, a transverse section of the rolling-mill on the line 1 2, Fig. 2; Fig. 5, aperspective view of the scraping device detached from the mill; Fig. 6, a sectional ,View of part of one of the housings on the horizontal line 3 4, Fig. 1; and Fig. 7, a section of part of one of the housings on the line 5 6, Fig. 1. v

A and A are the two housings secured to the usual foundation-plates a a, and connected together by the upper stay-bolts b b and lower stay-bolts cl d.

To the rear edge of the housing A is secured a pin, 6, to which is hung a lever, D, and to the rear edge of the other housing, A, is secured a similar pin, 6, to which is hung a lever, D, the arms of the two levers being connected together by parallel bars ff, and one arm h of one of the levers being extended, as shown in Figs. 2 and 5.

To the parallel bar f is secured an adjustable block, E, and to the barf a similar block, E, and to each bloclcis fitted and secured a At the outer end of the arm h is a suitable handle, 9', Fig. 5 and to the same arm is secured a bar, 7;, carrying a weight, m, the tendency of which is tomove the two parallel bars ff" in the direction of the arrows, and consequently to move the blocks E E and their scrapers away from each 5 5 other.

It should be understood that the pair of rolls shown in the drawings is the last pair but one of a series for rolling round bars. In rolling such bars there are always opposite 6o fins of more or less prominence, and it is desirable that these should be removed before the final pass, instead of being'crushed by the latter into the body of the metal, andtherebyrendering the bar more or less imperfect. 6 5 We will suppose that the partly-finished bar,

of rolls next preceding those shown in the drawings, has to be submitted to the pass formed by the grooves m m, preparatory to receiving its final finish by the last pair of rollers. Just as the end of the bar passes from between the rollers an attendant depresses the arm h and thus causes the scrapers to approach each other and to come into contact with the bar, so that as the latter pursues its course the the fins will be removed, the arm h being released after the bar has passed, and the scrapers consequently moved farther apart from each other preparatory to the subjecting of another bar to the rolls. i i

As abar may have to be subjected to any of the numerous passes in the rolls B B, the blocks E E, with their scrapers, are made adjustable on the parallel bars- 8 5 While the scrapers may be combined with different appliances by which their action on the moving bar may be assured, I prefer the parallel bars and blocks and mechanism connected therewith. 0

It is important in mills for finishing round bars that the rolls should have neither vertical nor lateral play, and this I prevent in the manner which I will now proceed to describe.

Between the cap-block G of each housing and the top of the latter intervene two taper keys, n n, each of which is made adjustable by nuts '12 1), Fig. 2, on a threaded rod, 1), which, in the present instance, is a continuation of one of the above-mentioned stay-rods. [DC Other appliances for adjusting the keys may however, be adopted.

Between the upper bearing-block, I, of each journal of the lower roll and the lower bearing, J, of each journal of the upper roll, intervene two plates, 9 q, and between the two plates are two taper keys, it, one of which is shown in Fig. 7, the threaded stem of each key passing through the housing, and being furnished with a nut, as shown in the said figure. By means of these keys n a and t, in conjunction with the usual nuts, 10, which confine the cap-block, the bearing-blocks H, I, and J can be adjusted so nearly to the journals of the rolls that the latter cannot have the slightest vertical play. In other words, while every opportunity is offered for the adjustment of the rolls, the journals of the latter, after the adjustment has been effected, are as free from play as though they had their bearings in solid masses of metal instead of between adjustable bearing-blocks.

In order to prevent end play of the rolls, and to insure the coincidence of the grooves of the upper roller with those of the lower roller, I use adjusting-screws a a for each bearing-block, as shown in Figs. 6 and 7, each screw passing freely through the housing and into a recess in the bearing-block, but the thread of each screw being adapted to that of a nut let into the housing. By turning the screws appertaining to the several blocks, they can be adjusted close to the shoulders of the journals of the rolls, the screws being subsequently secured by jam-nuts.

I claim as my invention- 1. The combination, in a rollingmill, of movable scrapers i, with mechanism by which v the said scrapers may be moved from or toward each other, substantially as set forth.

2. The combination of the housings of a rolling-mill, levers D D, pivoted to the same, the parallel bars ff, connected to the lovers, the adjustable blocks E E, each carrying a scraper, and mechanism for operating the bars, all substantially as specified.

3. The combination, in a rolling-mill, of the bearing-block J, of the journal of anupper roller, and the bearing-block I, of the journal of a lower roller, with plates q q, interposed between the two blocks, and taper keys t, interposed between the plates, all substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOS. SHAFFER. Witnesses:

J OHN GRIFFEN, JESSE HALL, Jr. 

